Dust-collector.



No. 745,076. PATENTED NOV. 24, 1903'. J. M. SGHUTZ. DUST COLLECTOR.

APPLICATION FILED JUNE 7, 1900. H0 MODEL.

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Nb. 745,076. PATENTED NOV. 24, 1903. J. M. SGHUTZ;

DUST COLLECTOR.

APPLICATION FILED JUNE 7, 1900.

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UNITED STATES 1 v Patented November 24, 1905 PATENT Optics.

JOSEPH M. SOHUTZ, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE SOHUTZONEILL COMPANY, OF MINNEAPOLIS, MINNESOTA, A COR PORATION OF MINNESOTA.

DU ST-COLLECTO R.

SPECIFICATION forming part of Letters Patent No. 745,076, dated November 24, 1903.

Application filed June 7, 1900. Serial No.19,346- (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH M. SOHU'IZ, of

the city of Minneapolis,'connty of Hennepin,

State of Minnesota,have invented certain new and useful Improvements in Dust-Collectors, of which the following is a specification.

My invention relates to means for separating dust from the air by'which the dust is carried. Many milling machines and pulverizers of various kinds discharge large volumes of air with the product, and it is necessary to collect the fine material. This is usually done in settling-chambers or by mechanical dust-collectors, in which latter class my invention belongs. The ordinary metallic dustcollector and some of the cloth dust-collectors are very efficient where but comparatively little dust is present in the air-blast; but these devices fail when there are large quantities of dust or pulverized material to be separated from an air-current.

The object of my invention is to providea collector that will be capable of meeting any requirement and which will be particularly adapted for use where the proportion of fine material to be separated is large. To this end I employ two principles of separation to wit, air relief through cloth and centrifugal separation.

My invention consists in a dust-collector comprising upper and lower heads connected by a plurality of cloth tubes and a tangential inlet for the upper head, whereby dust-laden air being blown into said tangential inlet the dust or pulverized material contained in the air will be projected against the walls of said head and will fall throughthe outer series of the cloth tubes, while the volume of air will find relief through the more central or inner tubes, which latter are also passages for any fine material that may be carried into them.

My invention further consists in a collector of the foregoing description with or without the tangential inlet and which is suspended by the top, leaving the lower head free to be turned, swung, or jarred, as the simplest method of vibrating and clearing the cloth tubes of dust that may lodge in the meshes thereof.

The invention will be more readily understood by reference to the accompanying drawings, in which- Figure 1 is an elevation of a dust-collector embodying my invention, one-half thereof being shown in vertical section. horizontal section on the line m 00 of Fig. 1.

In the drawings,2 represents the upper head of the collector, and 3 the lower head or hopper thereof. The bot-tom of the upper head is closed by the disk 4, and the top of the lower head is closed by the disk 5. The heads are preferably of sheet metal fastened to the hoops or rings 6 and 7, respectively, to which the disks 4 and 5 are attached by bolts 8, having thumb-nuts 9, that are readily removable for the purpose of cleaningthe heads and faces of the disks and also for the purpose of repairs to the cloth tubes 10. The disks 4 and 5 are usually of the same diame ter and are preferably made of wood. They are provided with an equal number of holes 11, preferably arranged in circular series.

about the center hole in each disk. The outer holes approach very closely to the walls of the heads, particularly the upper head. The cloth tubes 10 extend between opposite holes 11 and are secured in the heads 4: 5. The upper head 2 is provided with the tangential inlet 12, adapted to be coupled to the blastpipe andthrough which the blastofdust-laden air enters the head. On entering the air strikes the curved walls of the head and is set to whirling in the head 2, causing the particles of material to be projected against the Walls of the head, whence the material falls into the outer series of holes and tubes. The air is released through the meshes of the cloth tube, driving down through the same and carrying with it the bulk of material in the outer row of tubes and carrying some very fine material through the middle tubes. Before the volume of air reaches the bottom of the tubes its pressure is so far reduced that the material falls quietly into the lower head or hopper, collecting therein until the slide 13 at the lower end of the hopper is drawn out to discharge the material. A cloth tube (not shown) is usually extended from the valvecasting 14 to a barrel or other receptacle which is placed beneath the collector to receive the Fig. 2 is a 'of the lower head and twist or turn the same so as to give it a twisting or oscillating movement, which movement will be maintained for some time, causing the successive slacking and jarring of the tubes as the head rises and falls in the twisting movement, which movement is limited by the uniform length of the tubes. The individual tubes are in this way twisted slightly and the fine material is most thoroughly dislodged from the cloth meshes. If desired, the lower head may be held in a suitable center, providing it is permitted slight freedom of vertical movement. In this simple way I provide for the most effectual and complete cleaning or clearing of the cloth without using any power appliance. This collector is much used in the collection of pulverized drugs, and it is necessary that it be kept clean, and particularly necessary that it should be made so that it may be easily taken apart.

When it is desired to clean the machine, the thumb-nuts 9 are turned off the bolts in the upper head and the upper disk 4: and all parts below it are dropped to the floor. The

.lower head is as easily detached from the lower disk 5, and then all portions of the collector are easily accessible and may be cleansed thoroughly and quickly.

It is obvious that modifications of my invention will readily suggest themselves to one skilled in the art, and I therefore do not confine myself to the constructions herein shown and described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- Y 1. In a dust-collector, the upper head and the lower head, in combination with the substantially cylindrical collector-body arranged between said heads and composed of a plurality of cloth tubes, communicating with said heads and sn pporting said lower head, where-- by the lower head is left free for partial rotation and when thus rotated subjects all said tubes to torsional and longitudinal strains, to free them from dust; substantially as described.

-2. In a dust-collector, a substantially cylindrical upper head provided with a'tangential inlet for dust-laden air, in combination with the substantially cylindrical collectorbody composed of a plurality of cloth tubes hanging from said upper head, and the lower head hanging from said tubes and capable of twisting motion; as and for the purpose specifled.

3. In a dust-collector, the cylindrical upper head provided with a tangential inlet for dustladen air, in combination with the lower head having a suitable dust-hopper, and the substantially cylindrical collector-body arranged between said heads and composed of a large number of cloth tubes communicating with the heads; substantially as and for the purpose specified. I

4. A dust-collector comprising upper and lower heads having a tangential air-blast inlet and a discharge-spout respectively, in

combination with the disks 4 and 5 provided with a plurality of holes and detachably secured to said heads, and the substantially cylindrical collector-body composed of rows of cloth tubes, extending between said heads and fastened in the holes of said disks; substantially as described.

, 5. The dust-collector comprising the upper and lower heads, in combination with the collector-body connecting said heads and composed of a plurality of tubes arranged in concentric series and, a tangential inlet for said upper head, whereby the major portion of the dust discharged into said head is caused .to pass downward in the outer series of tubes, substantially as described.

In testimony whereof I have hereunto set my hand, this 2-lth day of May, 1900, at Minneapolis, Minnesota.

JOSEPH M. SOIIUTZ.

In presence of- O. G. HAWLEY, M. E. GooLEY. 

